GeoTest, Inc.: has been performing geotechnical and construction materials testing since 1997. GeoTest maintains modern, state of the art testing facilities in West Allis and DePere, Wisconsin. They also operate several mobile laboratories which are available throughout the region. GeoTest is accredited by the American Association of State Highway Traffic Officials (AASHTO) in soils, concrete, and concrete aggregate. They are also a Qualified Laboratory by the State of Wisconsin Department of Transportation and have also been validated by the U.S. Army Corp of Engineers.

SJB Services, Inc.: SJB Services, Inc. is one of the largest specialty engineering and support service firms in the Northeast, offering drilling, engineering and construction materials testing from our offices in Buffalo, Rochester, Cortland and Albany, New York. Testing services include field and laboratory testing, special instructions, geotechnical laboratory testing and non-destructive testing.

The Smithers Group: Smithers provides accredited independent testing, analytical and technical consulting services to the rubber, polymer and automotive industries. Quality and environmental management system registration services are also available to firms in a wide range of industries